15720039

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{337}}^1$

素因数の和:487

約数の個数: 24

約数和(自身を含む): 23411232

約数和(自身を除く): 7691193

約数列:

[1, 3, 9, 71, 73, 213, 219, 337, 639, 657, 1011, 3033, 5183, 15549, 23927, 24601, 46647, 71781, 73803, 215343, 221409, 1746671, 5240013, 15720039]

約数ペア:

[(1, 15720039), (3, 5240013), (9, 1746671), (71, 221409), (73, 215343), (213, 73803), (219, 71781), (337, 46647), (639, 24601), (657, 23927), (1011, 15549), (3033, 5183)]